SPONSOR CPD PROGRAMME | VENTILATION Module 159 March 2020 Name (please print)......................................................................................... Job title................................................................................................................ Organisation...................................................................................................... 1.How many hours a day is the average person likely to spend indoors according to the results of the UK survey mentioned in the article? A 22 hours B 19 hours C 16 hours D 13 hours E 10 hours or fewer 2.A typical ventilation rate for buildings is 10Ls- per person. How much air does a human typically inhale every second? A Less than 1Ls- B 1 to 3Ls- C 3 to 5Ls- D 5 to 8Ls- E 8 to 10Ls- 3.According to the reported ATTMA dataset, what percentage of systems installed in 2015-16 in new homes were MVHR systems? A <1% B 11% C 26% D 42% E More than 50% 4.In the example of the CO2 modelling, what was the approximate room CO2 concentration at 8am? A 410ppm B 555ppm C 600ppm D 800ppm E 1,000ppm 5.Which of these is least likely to be true for the augmented MVHR system described in the article? A It maintains a constant internal temperature throughout the seasons B It requires careful consideration before application in temperate climates C The coil follows the heat-recovery device in the flow of outdoor air D The cooling may be supplied from a heat pump with heat recovery E The heating energy can be supplied from a district heating network Address .............................................................................................................. ............................................................................................................................... ............................................................................................................................... Postcode ............................................................................................................ Email .................................................................................................................... Are you a member of CIBSE? 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Alternatively, fill in this page and post it to: N Hurley, CIBSE, 222 Balham High Road, London, SW12 9BS Further reading: There are many sources for further reading, including these publications: CIBSE TM40 (2006) Health issues in building services provides one of the most consolidated collections of CIBSE references for air quality related to ventilation. CIBSE KS17 Indoor Air Quality and Ventilation provides an accessible summary of assembled information taken from CIBSE publications and other standards. The Zero Carbon Hub 2013 report Mechanical ventilation with heat recovery in new homes includes useful, well researched MVHR good practice in section 4. And the soon-to-be-published update to CIBSE TM40 Health and wellbeing in building services will provide current thinking on the requirements for safe and healthy internal environments. References: 1 The inside story: health effects of indoor air quality on children and young people, Royal College of Physicians/Royal College of Paediatrics and Child Health, January 2020. 2 www.ribblecycles.co.uk/blog/not-great-outdoors/ accessed 5 February 2020. 3 ww3.arb.ca.gov/research/resnotes/notes/94-11.htm accessed 7 February 2020. 4 The Lancet DOI: (10.1016/S0140-6736(17)32345-0). 5 www.nice.org.uk/guidance/ng149/chapter/Recommendations#architects-anddesigners accessed 5 February 2020. 6 Crawley, J, The relationship between airtightness and ventilation in new UK dwellings, CIBSE BSERT, 2019, Vol. 40(3) 274289. 7 Building Regulation Ventilation Approved Document F1, HM Government, 2018 Means of ventilation. 8 Domestic Ventilation Compliance Guide: 2010 Edition, UK DCLG, 2011. 9 Domestic Building Services Compliance Guide 2013 edition for use in England, HM Government, 2018. 10 CIBSE TM59 Design methodology for the assessment of overheating risk in homes, CIBSE 2017. 64 March 2020 www.cibsejournal.com CIBSE Mar20 pp61-64 CPD v3.indd 64 21/02/2020 15:08